Running-board for automobiles



[1. I. HNNNE;v v RUNNING BOARD FOR AUTOMOBILES.

APPLICATION FILED MAYS, 1920..

' INTA/NOR.l

l BY ma 'ATTORNK UNITED sTAT Es PATENT OFFICE.`

JOHN T. HAYNE,

DETROIT, MICHIGAN.

RUNNING-BOARD Eon AUTOMOBILES.

Application led May 3,

an interlocking device having such peculiar construction as to permit atread sheet of linoleum or rubber, or similar material, to be applied tosuch boards vWithout having the device interfere with such applicationand without exposing any partv of the .device through or on the treadsurface of the tread sheet. u

The object of the invention is to provide a device of such novel andpeculiar shape and construction as to lockv itself against turning in apermanently mat-covered running board while the board is being securedto the board frame of an automobile, and as to be confined withinthe'board so as to leave the face of the board, to which a tread mat ismolded, free from obstructions and without defacement either to theboard or the mat.

A further object of the invention is to provide a novel and peculiardevice 'comprising a nut member having such construction as'to afford aflaring Hanged head, and P means for preventing the nut from turningduring the screwing thereinto of a clamping or set bolt.

Other advantages and improved results .are attainable in the manufactureand practical application of the invention as will hereinafter appear.

In the accompanying drawings forming part of this application Figure 1is a perspective view of part 'of a running board and frame showing thetread mat partly broken away and showing the application of theinvention.

Fig. 2 is a cross section of a running board and tread mat secured tothe board frame by a set of my improved fasteners.

Fig. 3 is a perspective view of one of the complete devices.

Fig, 4 is a cross section of a running board and part of its supporting'frame showing a modification of t e invention.

spcicatin pf Letters Patent. Patented June 21, 1921. i

1920. Serial N6. 378,690.

Thesame reference characters denote the same parts throughout theseveral views of the drawings.

rlhe invention being intended especially to permit rubber, linoleum orother tread mats tol be secured to running boards without puncturing lorotherwise making holes or countersinks in the mat for bolts, nuts orsimilar devices commonly used for securingthe board to the board frameor supports, and to permit adhesion of the mats to the boards orto ametal' plate covering the board, so that the meeting surfaces of the matand the board may be free of obstruction and interference by using myimproved board securing device.

In carrying out my invention I employ a metal stud, preferably of lesslength than the thickness of a running boardr as 1, which has holes 2extending therethrough with a countersunk end in the upper face of theboard, and said holes are provided with a pair of vertical grooves 3.The board has other holes or cavities 4, into which are pressed lugs orprojection 5 of the tread mat 6 having tread ribs 7. The side edges,

of the board are reduced in thickness from that of the body of the boardso as to form a seat 8 for the thickened side edges of the mat as at 9,and the parts 9 together with the lugs 5 are molded, by high pressure,onto the upper face of the board, with. the body of the mat coveringsaid countersunk holes ofthe board, but this operation is receded byinserting into the holes 2 of the board, from the upper face thereof, astud, now to be particularly described.

The stud comprises a cylindrical body 10, preferably of such length asnot to extend entirely through the board holes 2, and has from the upperface of the board, the stud head with its flange lits within the boardcountersunk holes 2 and the cleats 14 fit the grooves 3 for locking thestud in position against turning. The mat is then pressed into positionupon the board so as to be fixed therewith, and prevents displacement ofthe studs, thus forming a complete mat tread covered running boardr'eady for transportation and application to the running board frame orsupports l5, of an automobile.

The mat covered board is attached to the frame or supports 15 by meansof a'set bolt 16 extending throughsaid supports and into the screwsocket 11 of thestud with a washer 17 therebetween. Obviously the boltisof less length than the depth of the socket 11, so as to utilize thetake up space between the lower or open end of this stud and the loweror under face of the board for clamping various thicknesses and4tighteningthe boards as occasion may demand.

' Referring to the modification shown in Fig. 4 of the drawings, theheads of the studs 18 are brazed or spot welded -in countersinks 19,0f4a thin metal plate 20 having holes into which lugs 21 of thecomposition mat 22 enter when this mat is pressed onto the plate 20.This arrangement permits the plate and the studs to be handled as onearticley and applied to various running boards as 23 after the studholes are made therein to correspond with the studs.

Having thus described my invention what I claim as new and desire tosecure by .Letters Patentisz l. kA running board for automobiles, inycluding a main member having a plurality of countersunk stud-receivingorifices whose walls are provided with longitudinal grooves, studsreceived by said countersunk or1ices,'each stud having a screw-threadedsocket, an end flange and lateral longitudinal cleats, a tread-matmember, and securing means between said studs and the run-l nin boardthreaded into the sockets of said stu' s,`; said vgrooves receiving saidlongitudinal cleats, the end flanges of said studs being receivedby'the'countersinks of said orifices.

2. In running boards for automobiles, a main board, 4a board platehaving. a plural-ity of mat holes and a plurality of countersunk studholes corresponding with like holes in the main board, studs each havinga screw threaded socket and a head attached in the countersink of saidplate, said studs vextending through the plate and into the main board,and bolts fitting the screw sockets for clamping the said plate and themain board to runningl board supports.

In` witness whereof I hereunto set my hand in the presence of twowitnesses.

yJOHN T. HAYNE.

Witnesses:

' Mrs. (LH. JOHNSTON,

BEATRICE R. ALEXANDER.

